Silica in Developing Epidermal Cells of Avena Internodes: Electron Microprobe Analysis

Science  21 Nov 1969:
Vol. 166, Issue 3908, pp. 1015-1017
DOI: 10.1126/science.166.3908.1015


Silica is present in significant amount in mature guard and subsidiary cells of stomata, in trichomes and silica cells, and in the walls of long eidermal cells of Avena. No silica was detectable in cork cells of cork-silica cell pairs. Silica must be accumulated in these specialized epidermal cells quite rapidly.